free command

How do I find out ram information under Linux operating systems?

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I am a new CentOS Linux user. How do I find out installed ram information on CentOS Linux? How do I find out memory usage statistics on Centos Linux version 5.x/6.x+ using console based command line option?

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How do I check the ram size from my Redhat Linux desktop system using command line and GUI tools? How do I find out memory size on Red Hat Enterprise Linux server?

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How do I execute a script under UNIX or Linux like operating system using command prompt?

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How do I find out my RAM size under Linux operating systems?

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How do I check amount of RAM in my Ubuntu Linux laptop or desktop system/server using GUI and command line tools?

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Q. I’ve total 8 GB RAM installed in my dual boot Ubuntu Linux 8.10 (32 bit) version HP workstation. But free -m command only shows 3291 (3G) memory. How do I use 8GB RAM under Ubuntu Linux?

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